filecore_vfsops.c revision 1.67.2.3
1 /* $NetBSD: filecore_vfsops.c,v 1.67.2.3 2014/05/22 11:41:00 yamt Exp $ */ 2 3 /*- 4 * Copyright (c) 1994 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * filecore_vfsops.c 1.1 1998/6/26 32 */ 33 34 /*- 35 * Copyright (c) 1998 Andrew McMurry 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by the University of 48 * California, Berkeley and its contributors. 49 * 4. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * filecore_vfsops.c 1.1 1998/6/26 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: filecore_vfsops.c,v 1.67.2.3 2014/05/22 11:41:00 yamt Exp $"); 70 71 #if defined(_KERNEL_OPT) 72 #include "opt_compat_netbsd.h" 73 #endif 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/namei.h> 78 #include <sys/proc.h> 79 #include <sys/vnode.h> 80 #include <miscfs/genfs/genfs.h> 81 #include <miscfs/specfs/specdev.h> 82 #include <sys/mount.h> 83 #include <sys/buf.h> 84 #include <sys/file.h> 85 #include <sys/device.h> 86 #include <sys/errno.h> 87 #include <sys/pool.h> 88 #include <sys/conf.h> 89 #include <sys/sysctl.h> 90 #include <sys/kauth.h> 91 #include <sys/module.h> 92 93 #include <fs/filecorefs/filecore.h> 94 #include <fs/filecorefs/filecore_extern.h> 95 #include <fs/filecorefs/filecore_node.h> 96 #include <fs/filecorefs/filecore_mount.h> 97 98 MODULE(MODULE_CLASS_VFS, filecore, NULL); 99 100 static struct sysctllog *filecore_sysctl_log; 101 102 extern const struct vnodeopv_desc filecore_vnodeop_opv_desc; 103 104 const struct vnodeopv_desc * const filecore_vnodeopv_descs[] = { 105 &filecore_vnodeop_opv_desc, 106 NULL, 107 }; 108 109 struct vfsops filecore_vfsops = { 110 .vfs_name = MOUNT_FILECORE, 111 .vfs_min_mount_data = sizeof (struct filecore_args), 112 .vfs_mount = filecore_mount, 113 .vfs_start = filecore_start, 114 .vfs_unmount = filecore_unmount, 115 .vfs_root = filecore_root, 116 .vfs_quotactl = (void *)eopnotsupp, 117 .vfs_statvfs = filecore_statvfs, 118 .vfs_sync = filecore_sync, 119 .vfs_vget = filecore_vget, 120 .vfs_fhtovp = filecore_fhtovp, 121 .vfs_vptofh = filecore_vptofh, 122 .vfs_init = filecore_init, 123 .vfs_reinit = filecore_reinit, 124 .vfs_done = filecore_done, 125 .vfs_snapshot = (void *)eopnotsupp, 126 .vfs_extattrctl = vfs_stdextattrctl, 127 .vfs_suspendctl = (void *)eopnotsupp, 128 .vfs_renamelock_enter = genfs_renamelock_enter, 129 .vfs_renamelock_exit = genfs_renamelock_exit, 130 .vfs_fsync = (void *)eopnotsupp, 131 .vfs_opv_descs = filecore_vnodeopv_descs 132 }; 133 134 static const struct genfs_ops filecore_genfsops = { 135 .gop_size = genfs_size, 136 }; 137 138 static int 139 filecore_modcmd(modcmd_t cmd, void *arg) 140 { 141 int error; 142 143 switch (cmd) { 144 case MODULE_CMD_INIT: 145 error = vfs_attach(&filecore_vfsops); 146 if (error != 0) 147 break; 148 sysctl_createv(&filecore_sysctl_log, 0, NULL, NULL, 149 CTLFLAG_PERMANENT, 150 CTLTYPE_NODE, "filecore", 151 SYSCTL_DESCR("Acorn FILECORE file system"), 152 NULL, 0, NULL, 0, 153 CTL_VFS, 19, CTL_EOL); 154 /* 155 * XXX the "19" above could be dynamic, thereby eliminating 156 * one more instance of the "number to vfs" mapping problem, 157 * but "19" is the order as taken from sys/mount.h 158 */ 159 break; 160 case MODULE_CMD_FINI: 161 error = vfs_detach(&filecore_vfsops); 162 if (error != 0) 163 break; 164 sysctl_teardown(&filecore_sysctl_log); 165 break; 166 default: 167 error = ENOTTY; 168 break; 169 } 170 171 return (error); 172 } 173 174 /* 175 * Called by vfs_mountroot when iso is going to be mounted as root. 176 * 177 * Name is updated by mount(8) after booting. 178 */ 179 180 static int filecore_mountfs(struct vnode *devvp, struct mount *mp, 181 struct lwp *l, struct filecore_args *argp); 182 183 #if 0 184 int 185 filecore_mountroot(void) 186 { 187 struct mount *mp; 188 extern struct vnode *rootvp; 189 struct proc *p = curproc; /* XXX */ 190 int error; 191 struct filecore_args args; 192 193 if (device_class(root_device) != DV_DISK) 194 return (ENODEV); 195 196 /* 197 * Get vnodes for swapdev and rootdev. 198 */ 199 if (bdevvp(rootdev, &rootvp)) 200 panic("filecore_mountroot: can't setup rootvp"); 201 202 if ((error = vfs_rootmountalloc(MOUNT_FILECORE, "root_device", &mp)) != 0) 203 return (error); 204 205 args.flags = FILECOREMNT_ROOT; 206 if ((error = filecore_mountfs(rootvp, mp, p, &args)) != 0) { 207 vfs_unbusy(mp, false, NULL); 208 vfs_destroy(mp); 209 return (error); 210 } 211 mountlist_append(mp); 212 (void)filecore_statvfs(mp, &mp->mnt_stat, p); 213 vfs_unbusy(mp, false, NULL); 214 return (0); 215 } 216 #endif 217 218 /* 219 * VFS Operations. 220 * 221 * mount system call 222 */ 223 int 224 filecore_mount(struct mount *mp, const char *path, void *data, size_t *data_len) 225 { 226 struct lwp *l = curlwp; 227 struct vnode *devvp; 228 struct filecore_args *args = data; 229 int error; 230 struct filecore_mnt *fcmp = NULL; 231 232 if (args == NULL) 233 return EINVAL; 234 if (*data_len < sizeof *args) 235 return EINVAL; 236 237 if (mp->mnt_flag & MNT_GETARGS) { 238 fcmp = VFSTOFILECORE(mp); 239 if (fcmp == NULL) 240 return EIO; 241 args->flags = fcmp->fc_mntflags; 242 args->uid = fcmp->fc_uid; 243 args->gid = fcmp->fc_gid; 244 args->fspec = NULL; 245 *data_len = sizeof *args; 246 return 0; 247 } 248 249 if ((mp->mnt_flag & MNT_RDONLY) == 0) 250 return (EROFS); 251 252 if ((mp->mnt_flag & MNT_UPDATE) && args->fspec == NULL) 253 return EINVAL; 254 255 /* 256 * Not an update, or updating the name: look up the name 257 * and verify that it refers to a sensible block device. 258 */ 259 error = namei_simple_user(args->fspec, 260 NSM_FOLLOW_NOEMULROOT, &devvp); 261 if (error != 0) 262 return (error); 263 264 if (devvp->v_type != VBLK) { 265 vrele(devvp); 266 return ENOTBLK; 267 } 268 if (bdevsw_lookup(devvp->v_rdev) == NULL) { 269 vrele(devvp); 270 return ENXIO; 271 } 272 /* 273 * If mount by non-root, then verify that user has necessary 274 * permissions on the device. 275 */ 276 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 277 error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_MOUNT, 278 KAUTH_REQ_SYSTEM_MOUNT_DEVICE, mp, devvp, KAUTH_ARG(VREAD)); 279 VOP_UNLOCK(devvp); 280 if (error) { 281 vrele(devvp); 282 return (error); 283 } 284 if ((mp->mnt_flag & MNT_UPDATE) == 0) 285 error = filecore_mountfs(devvp, mp, l, args); 286 else { 287 fcmp = VFSTOFILECORE(mp); 288 if (devvp != fcmp->fc_devvp) 289 error = EINVAL; /* needs translation */ 290 else 291 vrele(devvp); 292 } 293 if (error) { 294 vrele(devvp); 295 return error; 296 } 297 fcmp = VFSTOFILECORE(mp); 298 return set_statvfs_info(path, UIO_USERSPACE, args->fspec, UIO_USERSPACE, 299 mp->mnt_op->vfs_name, mp, l); 300 } 301 302 /* 303 * Common code for mount and mountroot 304 */ 305 static int 306 filecore_mountfs(struct vnode *devvp, struct mount *mp, struct lwp *l, struct filecore_args *argp) 307 { 308 struct filecore_mnt *fcmp = (struct filecore_mnt *)0; 309 struct buf *bp = NULL; 310 dev_t dev = devvp->v_rdev; 311 int error = EINVAL; 312 int ronly = (mp->mnt_flag & MNT_RDONLY) != 0; 313 struct filecore_disc_record *fcdr; 314 unsigned map; 315 unsigned log2secsize; 316 317 if (!ronly) 318 return EROFS; 319 320 if ((error = vinvalbuf(devvp, V_SAVE, l->l_cred, l, 0, 0)) != 0) 321 return (error); 322 323 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 324 error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED); 325 VOP_UNLOCK(devvp); 326 if (error) 327 return error; 328 329 /* Read the filecore boot block to check FS validity and to find the map */ 330 error = bread(devvp, FILECORE_BOOTBLOCK_BLKN, 331 FILECORE_BOOTBLOCK_SIZE, NOCRED, 0, &bp); 332 #ifdef FILECORE_DEBUG_BR 333 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 334 FILECORE_BOOTBLOCK_BLKN, FILECORE_BOOTBLOCK_SIZE, 335 bp, error); 336 #endif 337 if (error != 0) 338 goto out; 339 340 KASSERT(bp != NULL); 341 if (filecore_bbchecksum(bp->b_data) != 0) { 342 error = EINVAL; 343 goto out; 344 } 345 fcdr = (struct filecore_disc_record *)((char *)(bp->b_data) + 346 FILECORE_BB_DISCREC); 347 map = ((((8 << fcdr->log2secsize) - fcdr->zone_spare) 348 * (fcdr->nzones / 2) - 8 * FILECORE_DISCREC_SIZE) 349 << fcdr->log2bpmb) >> fcdr->log2secsize; 350 log2secsize = fcdr->log2secsize; 351 #ifdef FILECORE_DEBUG_BR 352 printf("brelse(%p) vf1\n", bp); 353 #endif 354 brelse(bp, BC_AGE); 355 bp = NULL; 356 357 /* Read the bootblock in the map */ 358 error = bread(devvp, map, 1 << log2secsize, NOCRED, 0, &bp); 359 #ifdef FILECORE_DEBUG_BR 360 printf("bread(%p, %x, %d, CRED, %p)=%d\n", devvp, 361 map, 1 << log2secsize, bp, error); 362 #endif 363 if (error != 0) 364 goto out; 365 fcdr = (struct filecore_disc_record *)((char *)(bp->b_data) + 4); 366 fcmp = kmem_zalloc(sizeof(*fcmp), KM_SLEEP); 367 if (fcdr->log2bpmb > fcdr->log2secsize) 368 fcmp->log2bsize = fcdr->log2bpmb; 369 else fcmp->log2bsize = fcdr->log2secsize; 370 fcmp->blksize = 1 << fcmp->log2bsize; 371 memcpy(&fcmp->drec, fcdr, sizeof(*fcdr)); 372 fcmp->map = map; 373 fcmp->idspz = ((8 << fcdr->log2secsize) - fcdr->zone_spare) 374 / (fcdr->idlen + 1); 375 fcmp->mask = (1 << fcdr->idlen) - 1; 376 if (fcdr->big_flag & 1) { 377 fcmp->nblks = ((((u_int64_t)fcdr->disc_size_2) << 32) 378 + fcdr->disc_size) / fcmp->blksize; 379 } else { 380 fcmp->nblks=fcdr->disc_size / fcmp->blksize; 381 } 382 383 #ifdef FILECORE_DEBUG_BR 384 printf("brelse(%p) vf2\n", bp); 385 #endif 386 brelse(bp, BC_AGE); 387 bp = NULL; 388 389 mp->mnt_data = fcmp; 390 mp->mnt_stat.f_fsidx.__fsid_val[0] = (long)dev; 391 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_FILECORE); 392 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 393 mp->mnt_stat.f_namemax = 10; 394 mp->mnt_flag |= MNT_LOCAL; 395 mp->mnt_dev_bshift = fcdr->log2secsize; 396 mp->mnt_fs_bshift = fcmp->log2bsize; 397 398 fcmp->fc_mountp = mp; 399 fcmp->fc_dev = dev; 400 fcmp->fc_devvp = devvp; 401 fcmp->fc_mntflags = argp->flags; 402 if (argp->flags & FILECOREMNT_USEUID) { 403 fcmp->fc_uid = kauth_cred_getuid(l->l_cred); 404 fcmp->fc_gid = kauth_cred_getgid(l->l_cred); 405 } else { 406 fcmp->fc_uid = argp->uid; 407 fcmp->fc_gid = argp->gid; 408 } 409 410 return 0; 411 out: 412 if (bp) { 413 #ifdef FILECORE_DEBUG_BR 414 printf("brelse(%p) vf3\n", bp); 415 #endif 416 brelse(bp, 0); 417 } 418 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY); 419 (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED); 420 VOP_UNLOCK(devvp); 421 return error; 422 } 423 424 /* 425 * Make a filesystem operational. 426 * Nothing to do at the moment. 427 */ 428 /* ARGSUSED */ 429 int 430 filecore_start(struct mount *mp, int flags) 431 { 432 return 0; 433 } 434 435 /* 436 * unmount system call 437 */ 438 int 439 filecore_unmount(struct mount *mp, int mntflags) 440 { 441 struct filecore_mnt *fcmp; 442 int error, flags = 0; 443 444 if (mntflags & MNT_FORCE) 445 flags |= FORCECLOSE; 446 if ((error = vflush(mp, NULLVP, flags)) != 0) 447 return (error); 448 449 fcmp = VFSTOFILECORE(mp); 450 451 if (fcmp->fc_devvp->v_type != VBAD) 452 spec_node_setmountedfs(fcmp->fc_devvp, NULL); 453 vn_lock(fcmp->fc_devvp, LK_EXCLUSIVE | LK_RETRY); 454 error = VOP_CLOSE(fcmp->fc_devvp, FREAD, NOCRED); 455 vput(fcmp->fc_devvp); 456 kmem_free(fcmp, sizeof(*fcmp)); 457 mp->mnt_data = NULL; 458 mp->mnt_flag &= ~MNT_LOCAL; 459 return (error); 460 } 461 462 /* 463 * Return root of a filesystem 464 */ 465 int 466 filecore_root(struct mount *mp, struct vnode **vpp) 467 { 468 struct vnode *nvp; 469 int error; 470 471 if ((error = VFS_VGET(mp, FILECORE_ROOTINO, &nvp)) != 0) 472 return (error); 473 *vpp = nvp; 474 return (0); 475 } 476 477 /* 478 * Get file system statistics. 479 */ 480 int 481 filecore_statvfs(struct mount *mp, struct statvfs *sbp) 482 { 483 struct filecore_mnt *fcmp = VFSTOFILECORE(mp); 484 485 sbp->f_bsize = fcmp->blksize; 486 sbp->f_frsize = sbp->f_bsize; /* XXX */ 487 sbp->f_iosize = sbp->f_bsize; /* XXX */ 488 sbp->f_blocks = fcmp->nblks; 489 sbp->f_bfree = 0; /* total free blocks */ 490 sbp->f_bavail = 0; /* blocks free for non superuser */ 491 sbp->f_bresvd = 0; /* reserved blocks */ 492 sbp->f_files = 0; /* total files */ 493 sbp->f_ffree = 0; /* free file nodes for non superuser */ 494 sbp->f_favail = 0; /* free file nodes */ 495 sbp->f_fresvd = 0; /* reserved file nodes */ 496 copy_statvfs_info(sbp, mp); 497 return 0; 498 } 499 500 /* ARGSUSED */ 501 int 502 filecore_sync(struct mount *mp, int waitfor, kauth_cred_t cred) 503 { 504 return (0); 505 } 506 507 /* 508 * File handle to vnode 509 * 510 * Have to be really careful about stale file handles: 511 * - check that the inode number is in range 512 * - call iget() to get the locked inode 513 * - check for an unallocated inode (i_mode == 0) 514 * - check that the generation number matches 515 */ 516 517 struct ifid { 518 ushort ifid_len; 519 ushort ifid_pad; 520 u_int32_t ifid_ino; 521 }; 522 523 /* ARGSUSED */ 524 int 525 filecore_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp) 526 { 527 struct ifid ifh; 528 struct vnode *nvp; 529 struct filecore_node *ip; 530 int error; 531 532 if (fhp->fid_len != sizeof(struct ifid)) 533 return EINVAL; 534 535 memcpy(&ifh, fhp, sizeof(ifh)); 536 if ((error = VFS_VGET(mp, ifh.ifid_ino, &nvp)) != 0) { 537 *vpp = NULLVP; 538 return (error); 539 } 540 ip = VTOI(nvp); 541 if (filecore_staleinode(ip)) { 542 vput(nvp); 543 *vpp = NULLVP; 544 return (ESTALE); 545 } 546 *vpp = nvp; 547 return (0); 548 } 549 550 /* This looks complicated. Look at other vgets as well as the iso9660 one. 551 * 552 * The filecore inode number is made up of 1 byte directory entry index and 553 * 3 bytes of the internal disc address of the directory. On a read-only 554 * filesystem this is unique. For a read-write version we may not be able to 555 * do vget, see msdosfs. 556 */ 557 558 int 559 filecore_vget(struct mount *mp, ino_t ino, struct vnode **vpp) 560 { 561 struct filecore_mnt *fcmp; 562 struct filecore_node *ip; 563 struct buf *bp; 564 struct vnode *vp; 565 dev_t dev; 566 int error; 567 568 fcmp = VFSTOFILECORE(mp); 569 dev = fcmp->fc_dev; 570 if ((*vpp = filecore_ihashget(dev, ino)) != NULLVP) 571 return (0); 572 573 /* Allocate a new vnode/filecore_node. */ 574 error = getnewvnode(VT_FILECORE, mp, filecore_vnodeop_p, NULL, &vp); 575 if (error) { 576 *vpp = NULLVP; 577 return (error); 578 } 579 ip = pool_get(&filecore_node_pool, PR_WAITOK); 580 memset(ip, 0, sizeof(struct filecore_node)); 581 vp->v_data = ip; 582 ip->i_vnode = vp; 583 ip->i_dev = dev; 584 ip->i_number = ino; 585 ip->i_block = -1; 586 ip->i_parent = -2; 587 genfs_node_init(vp, &filecore_genfsops); 588 589 /* 590 * Put it onto its hash chain and lock it so that other requests for 591 * this inode will block if they arrive while we are sleeping waiting 592 * for old data structures to be purged or for the contents of the 593 * disk portion of this inode to be read. 594 */ 595 filecore_ihashins(ip); 596 597 if (ino == FILECORE_ROOTINO) { 598 /* Here we need to construct a root directory inode */ 599 memcpy(ip->i_dirent.name, "root", 4); 600 ip->i_dirent.load = 0; 601 ip->i_dirent.exec = 0; 602 ip->i_dirent.len = FILECORE_DIR_SIZE; 603 ip->i_dirent.addr = fcmp->drec.root; 604 ip->i_dirent.attr = FILECORE_ATTR_DIR | FILECORE_ATTR_READ; 605 606 } else { 607 /* Read in Data from Directory Entry */ 608 if ((error = filecore_bread(fcmp, ino & FILECORE_INO_MASK, 609 FILECORE_DIR_SIZE, NOCRED, &bp)) != 0) { 610 vput(vp); 611 *vpp = NULL; 612 return (error); 613 } 614 615 memcpy(&ip->i_dirent, 616 fcdirentry(bp->b_data, ino >> FILECORE_INO_INDEX), 617 sizeof(struct filecore_direntry)); 618 #ifdef FILECORE_DEBUG_BR 619 printf("brelse(%p) vf5\n", bp); 620 #endif 621 brelse(bp, 0); 622 } 623 624 ip->i_mnt = fcmp; 625 ip->i_devvp = fcmp->fc_devvp; 626 ip->i_diroff = 0; 627 vref(ip->i_devvp); 628 629 /* 630 * Setup type 631 */ 632 vp->v_type = VREG; 633 if (ip->i_dirent.attr & FILECORE_ATTR_DIR) 634 vp->v_type = VDIR; 635 636 /* 637 * Initialize the associated vnode 638 */ 639 switch (vp->v_type) { 640 case VFIFO: 641 case VCHR: 642 case VBLK: 643 /* 644 * Devices not supported. 645 */ 646 vput(vp); 647 return (EOPNOTSUPP); 648 case VLNK: 649 case VNON: 650 case VSOCK: 651 case VDIR: 652 case VBAD: 653 case VREG: 654 break; 655 } 656 657 if (ino == FILECORE_ROOTINO) 658 vp->v_vflag |= VV_ROOT; 659 660 /* 661 * XXX need generation number? 662 */ 663 664 uvm_vnp_setsize(vp, ip->i_size); 665 *vpp = vp; 666 return (0); 667 } 668 669 /* 670 * Vnode pointer to File handle 671 */ 672 /* ARGSUSED */ 673 int 674 filecore_vptofh(struct vnode *vp, struct fid *fhp, size_t *fh_size) 675 { 676 struct filecore_node *ip = VTOI(vp); 677 struct ifid ifh; 678 679 if (*fh_size < sizeof(struct ifid)) { 680 *fh_size = sizeof(struct ifid); 681 return E2BIG; 682 } 683 memset(&ifh, 0, sizeof(ifh)); 684 ifh.ifid_len = sizeof(struct ifid); 685 ifh.ifid_ino = ip->i_number; 686 memcpy(fhp, &ifh, sizeof(ifh)); 687 return 0; 688 } 689
Indexes created Wed Oct 01 12:09:54 GMT 2025